WO2018130788A1

WO2018130788A1 - Motorised vehicle for recycling aggregates and motorised unit for making trenches including such a motorised vehicle

Info

Publication number: WO2018130788A1
Application number: PCT/FR2018/050066
Authority: WO
Inventors: Daniel Rivard; Philippe Dhervilly
Original assignee: Groupe Marais
Priority date: 2017-01-12
Filing date: 2018-01-11
Publication date: 2018-07-19
Also published as: FR3061729B1; US20190376258A1; EP3568528B1; US10895061B2; EP3568528A1; FR3061729A1

Abstract

The invention relates to a motorised vehicle (1) for recycling aggregates, which comprises a chassis (2) and an engine unit (3), and, mounted on the chassis (2), a device for collecting aggregates (7), a crushing chamber (9) supplied with aggregates by the device for collecting aggregates (7), by mechanical collection or by suction, and configured to crush the aggregates and to supply crushed aggregates to an outlet, a mixing device (10) connected to the crushing chamber (9) to receive at least one portion of the crushed aggregates available at the outlet of the crushing chamber (9) and configured to mix these received crushed aggregates with at least one binder so as to produce a mortar, and a distribution channel (12) configured to distribute the produced mortar at the outlet of the mixing device (10).

Description

Motorized aggregate recycling machine and motorized assembly for making trenches comprising such a motorized machine

The present invention relates to a motorized machine for recycling aggregates, and a motorized assembly for making trenches in the ground, which comprises such a motorized machine for recycling aggregates.

The motorized assembly for producing trenches in the ground, has the function of making trenches for laying elongated objects such as, for example, optical and / or electrical cables, pipes and / or flexible pipes,. ..

Generally, the realization of such a trench in the ground, which may be the roadway or the shoulder of a road or the like, is performed by a trencher wheel digging device carried by a specific motorized vehicle. To reduce the duration of the work due to the inconvenience caused by them, another machine is often used to suck up and recover the aggregates produced during the digging of the trench at the output of the cutting wheel face size.

Patent FR-2 822 862 discloses a vehicle which simultaneously provides the two digging functions of the trench and suction (and collection) aggregates, which allows, in working condition, to significantly reduce the inconvenience caused during the execution of the works on the road network and to decrease also the engaged logistics and, thus, the costs of realization.

However, for such a trench construction site or for any other site for which aggregates are generated, there is always the question of the removal of aggregates from the site, and then their treatment, recycling or storage.

These operations have significant costs (logistics and labor). The present invention aims to overcome these disadvantages. It relates to a motorized machine for recycling aggregates, comprising a frame and a power unit.

For this purpose, according to the invention, said motorized device comprises, mounted on the chassis:

- a device for collecting aggregates;

a crushing chamber fed with aggregates by said aggregate collecting device, and configured to crush the aggregates and to provide crushed aggregates at an outlet;

- A mixing device connected to the crushing chamber for receiving at least a portion of the crushed aggregates available at the outlet of the crushing chamber and configured to mix these crushed aggregates received with at least one binder to produce a mortar; and

a distribution channel configured to dispense the mortar produced at the outlet of the mixing device.

Thus, the motorized vehicle according to the invention allows both:

- to collect on a site, for example on a trenching site, the aggregates produced; and

- turn them into a mortar that is used directly on the site, for example to fill a trench previously formed in the case of a trenching site, after laying in the trench dug elongated objects such as cables by example.

The present invention thus allows an effective recycling, directly on the site, of all aggregates produced, and this with the aid of a single motorized vehicle, which allows on the one hand to avoid the usual costs and to dispose of mortar (self-compacting, fluid, homogeneous and stable) ready for use on site.

In a preferred embodiment, the motorized machine comprises a screen arranged between the crushing chamber and the mixing device.

Advantageously, the motorized machine is configured to separate the aggregates available at the outlet of the crushing chamber according to of a predetermined size, the aggregates whose size is less than or equal to said predetermined size being transmitted to the mixing device and the aggregates whose size is greater than said predetermined size being returned to the crushing chamber.

In addition, preferably, said crushing chamber and said screen each have a working direction between their respective inlet and outlet, which is transverse to a longitudinal direction of the frame of the machine, and said machine comprises transfer paths on the one hand between the crushing chamber and the screen and on the other hand between the screen and the mixing device, these transfer channels each having a distribution direction which is substantially parallel to said longitudinal direction, which allows greatly reduce the size of the processing chain mounted on the frame and thus, in particular, to provide a shorter frame.

In a first embodiment, the aggregate collection device comprises a suction device, while in a second embodiment, said aggregate collection device comprises a treadmill or other mechanical loading means.

In addition, advantageously:

- the crushing chamber is configured to operate in depression; and or

the motorized machine comprises a weighing unit for weighing the crushed aggregates entering the mixing device.

The present invention also relates to a motorized assembly for making trenches.

According to the invention, this motorized assembly comprises:

a system for producing trenches in the ground, comprising at least one trench digging device. Preferably, the trenching system also comprises a system for extracting and collecting the aggregates produced during the digging of a trench, this trenching system then corresponding preferably to the device described in FR-2 822 862; and a motorized aggregate recycling machine as described above, which is configured to use at least a part (and preferably most) of the aggregates produced during digging of the trench by said trenching system and preferably for resealing at least part of the trench with the mortar produced and supplied at the outlet of the mixing device.

In a first embodiment, the trenching system comprises an autonomous auxiliary power unit, and is linked to said motorized aggregate recycling machine, at least for the collection of aggregates. Advantageously, the motorized assembly comprises a means for controlling the speed of advance of the two systems: the trenching system and the motorized machine for recycling aggregates.

In addition, in a second embodiment, the trenching system is mounted on the chassis of the motorized machine for recycling aggregates. In this second embodiment, all the means (device systems, ...) for making trenches and recycling aggregates, is mounted on one and the same motorized vehicle.

Otherwise :

in a first embodiment, the aggregate collecting device (of the motorized machine) is part of a suction and collection system (of the trenching system); and

in a second embodiment, said aggregate collection device (of the motorized machine) comprises a mechanical loading means.

The invention will be better understood, and other objects, details, features and advantages thereof will appear more clearly in the following detailed explanatory description of embodiments of the invention given by way of example. purely illustrative and non-limiting, with reference to the accompanying schematic drawings. On these drawings: - Figure 1 is a side view, slightly in perspective, of a particular embodiment of a motorized machine for recycling aggregates according to the invention;

- Figure 2 is a perspective view of the motorized machine shown in Figure 1;

FIG. 3 is a partial perspective view, on an enlarged scale, of part of a crushed aggregate transfer path;

FIG. 4 is a partial perspective view, on an enlarged scale, of a mortar distribution channel;

- Figure 5 is a partial view, in perspective, of the rear of the motorized machine comprising the mortar distribution channel; and

- Figure 6 is a side view of a particular embodiment of a motorized assembly for the realization of a trench and the recycling of aggregates, shown during the execution of a trench.

According to the invention, the motorized vehicle 1 shown in Figures 1 and 2 is a mobile machine for recycling aggregates. This motorized vehicle 1 comprises a chassis 2 of longitudinal axis L and a power unit 3 associated with four axles provided with wheels 4 to generate the movement of the motorized vehicle 1 on the ground, in the direction illustrated by an arrow E on the figure 1 . In Figures 1 and 2, the driver's cab 5 is shown very schematically.

According to the invention, said motorized vehicle 1 comprises a processing chain 6 which is mounted on the chassis 2. This processing chain 6 comprises, mounted on the chassis 2 from the front 13A to the rear 13B of the chassis 2:

a collection device 7 configured to bring the aggregates into the processing line 6. In FIGS. 1 and 2, a portion of a pipe (or flexible pipe) 8 of the collecting device 7, by which are recovered, is shown. aggregates that are generally available at ground level in front of or beside the motorized vehicle 1. In a preferred application, described below, the aggregates are extracted from the pavement or shoulder by a wheel slicer which, itself, is careened so that the aggregates are more easily collected and take a suction flow to a crushing chamber 9;

the crushing chamber 9 supplied with aggregates by said collecting device 7, and configured to crush the aggregates received and to provide crushed aggregates at an outlet;

a mixing device 10 connected in the manner specified below to the crushing chamber 9 so as to receive at least a portion of the crushed aggregates (calibrated) available at the outlet of the crushing chamber 9. This mixing device 10 is configured for mixing the crushed aggregates received, with at least one binder (or cement) and water available in tanks located by an arrow 1 1, to produce a mortar; and

a distribution channel 12 configured to dispense (that is to say, supply) the mortar produced at the outlet of the mixing device 10, at the rear 13B of the motorized machine 1.

Thus, the motorized vehicle 1 allows both:

- to collect on a site the aggregates that are produced or available on this site; and

- turn them into a mortar that is used directly on the site.

The present invention thus allows effective recycling directly on the site of all the aggregates produced, and this with the aid of a single motorized vehicle 1.

In a preferred embodiment, shown in Figures 1 and 2, the motorized vehicle 1 also comprises a screen 14. This screen 14 is arranged between the crushing chamber 9 and the mixing device 10.

The screen 14 is configured to separate the aggregates available at the outlet of the crushing chamber 9 according to a predetermined size. Aggregates whose size is less than or equal to said predetermined size, are transmitted to the mixing device 10 via a transfer path 15, one end 15A opens, for example, above a ramp 26 allowing to the crushed aggregates access to tanks 17 and 18 of the mixing device 10, as schematically illustrated by arrows A1 to A4 in Figure 3. The aggregates whose size is greater than said predetermined size are, in turn, returned to the crushing chamber 9.

For the transfer of aggregates from one unit to another within the processing line 6, the motorized vehicle 1 comprises transfer channels 15 and 19 which can be made in various customary ways. They may include, for example, a treadmill.

In a preferred embodiment, the crushing chamber 9 has a working direction D1 between its inlet and its outlet, and the screen 14 has a working direction D2 between its inlet and its outlet, as shown in FIG. work direction of any unit means the direction in which the products, including aggregates, move within the unit under consideration during processing.

The working directions D1 and D2 are lateral, that is to say transverse to the longitudinal direction L of the chassis 2 of the machine 1. In other words, they are inclined with respect to this longitudinal direction L and therefore not parallel to the latter. Preferably, the working directions D1 and D2 are substantially orthogonal to the longitudinal direction L, as shown in FIG. 2.

In addition, the motorized vehicle 1 comprises a transfer path 19 between the crushing chamber 9 and the screen 14, and the transfer path 15 between the screen 14 and the mixing device 10. The transfer channels 19 and 15 each have a transfer direction F1 and F2 which is substantially parallel to said longitudinal direction L.

This preferred embodiment with a crushing chamber 9 and a screen 14 working laterally (directions D1 and D2), associated with longitudinal transfers of aggregates (F1 and F2 directions), can greatly reduce the size of the chain of treatment 6 mounted on the frame 2 and thus to provide a frame 2 shorter. This preferred embodiment has many advantages. It thus makes it possible, in particular, to reduce the possible inconvenience caused during the execution of the works on the road network.

The collecting device 7 intended to collect the aggregates to be treated and to bring them to the crushing chamber 9 can be made in different ways.

In a first preferred embodiment, the aggregate collecting device 7 comprises a suction device 16, as shown in FIGS. 1 and 2. In this embodiment, the suction device 7 comprises, an apparatus such as a turbine to generate a vacuum in the pipe 8 (or flexible pipe) whose free end accesses the aggregates to recover to suck. In the application described below, the suction device 7 can be supplied with suction flow by a turbine located on a slicing system placed in front of the motorized vehicle 1.

Preferably, the suction device 16 is positioned above the crushing chamber 9 so that the aggregates which are sucked by the flow of the suction device can descend directly by gravity into the crushing chamber 9.

In addition, in a second embodiment (not shown), said collection device 7 comprises a conveyor belt, in a mechanical loading mode.

Furthermore, in a preferred embodiment, the crushing chamber 9 is configured to operate in depression. The purpose of the crushing chamber 9 is to give the aggregates the desired particle size fraction for making the mortar.

The motorized vehicle 1 also comprises a weighing unit (not shown) for weighing the crushed aggregates entering the mixing device 10, in order to know their weight and to be able to add appropriate weights of binder (or cement) and water (available in the tanks shown by the arrow 1 1) to produce, by a usual mixing, a mortar having the desired properties. This mortar is distributed at the rear 13B of the motorized vehicle 1 with the aid of the distribution channel 12 shown in FIGS. 4 and 5.

The distribution channel 12 comprises two endless screws 21 and 22 connected to each other. The first screw 21 is arranged transversely to the longitudinal axis at the rear 13B of the motorized machine 1 as shown in FIG. 4, and is fed by the mortar produced by the mixing device 10. During the rotation of the worm 21, illustrated by an arrow B1, the product mortar is moved in the direction illustrated by an arrow C1 to end in the second screw 22. The latter, by its rotation illustrated by an arrow B2, moves the mortar in the direction illustrated by a C2 arrow. At the outlet of the screw 22, at its rear end 24, the mortar can be recovered in a recovery tank 23, as illustrated by an arrow G1 in FIG.

To make it possible to adapt the output position, namely the free rear end 24 of the screw 22 as a function in particular of the positioning of the recovery tank 23, the screw 22 is articulated, via a usual hinge 25, to the screw 21. It can be moved angularly and adopt a position which is either directed along the longitudinal axis, or inclined laterally with respect to this longitudinal axis.

The recovery tank 23 is guided by two guides in the trench and pressed on the right and left of it on two support plates. It is fed with mortar from above and feeds the trench T by gravity, as illustrated by arrows G1, G2 and G3 in FIG. 5. The recovery tank 23 is provided in its lower rear part with an evacuation duct. 27. Preferably, the mixing device 10 (or mortar or concrete plant) is configured to produce a self-placing mortar (or concrete), which facilitates its placement in the trench T.

In the context of the present invention, the motorized vehicle 1 can be mounted on a semi-trailer or an 8x4 truck or on any other machine or motorized site means for transporting the processing unit 6. The motorized vehicle 1 further has a hydrostatic or electric advance capable of being adjusted, preferably in a range of 0 to 1 km / h.

The motorized vehicle 1 may include a power supply by a generator with a continuous magnet.

The operation of the mobile engine 1, as described above and shown in particular in Figures 1 and 2, is as follows.

Aggregates located at ground level, either at the front of the motorized vehicle 1, or laterally to the motorized vehicle 1, are recovered, preferably aspirated, by the collecting device 7 as illustrated by an arrow H1 on the Figures 1 and 2. The collection device 7 brings these aggregates in the chain treatment 6 and more precisely in the crushing chamber 9. After crushing, the aggregates are transferred to the screen 14 via the transfer path 19. The sieve 14 sets separating the aggregates so that the sufficiently crushed aggregates are transmitted to the mixing device 10 via the transfer path 15 as illustrated by the arrows A1 to A4 in FIG. 3, while the insufficiently crushed aggregates are returned to the chamber of crushing 9 via a transfer channel not shown. The mixing device 10 mixes the received aggregates with appropriate amounts of water and binder to form a mortar. This mortar is then distributed at the rear of the motorized vehicle 1, via the distribution channel 12, via the recovery tank 23, as shown in Figure 5 in particular.

The motorized vehicle 1, as described above, comprising a processing line 6 which continuously manufactures mortar ready for use, has many advantages. In particular, it realizes an effective recycling, directly on the site, of all the aggregates produced, and this with the help of a single motorized vehicle, which allows on the one hand to avoid the usual costs and to dispose of mortar on site.

The motorized vehicle 1, as described above, can be used as an autonomous system. In this case, the collection device 7, preferably a suction device, collecting the aggregates arranged in particular on the ground, from the front or side of the motorized vehicle 1, and brings them to the processing chain 6, and the processing chain 6 transforms them into a mortar, which is available at the rear 13B of the motorized vehicle 1. By way of illustration, the aggregates can be aggregates generated by digging, for example a trench, or rubble generated by the demolition of a structure.

In a preferred application, the motorized aggregate recycling machine 1, as described above, is part of a motorized assembly 30 for making trenches, as shown by way of example in FIG.

This motorized assembly 30 comprises, in addition to the motorized vehicle 1, a system 31 for producing trenches in the ground. This system 31 comprises, in particular, a trench-digging device 32 and a system 33 for extracting and collecting the aggregates produced during the digging of a trench by the device 32. This trench-making system 31 corresponds, preferably , to the device described in patent FR-2,822,862.

In the embodiment shown in FIG. 6, the trenching system 31 comprises an autonomous auxiliary power unit 34, and it is linked to said motorized aggregate recycling machine 1, as specified below.

The system 31 shown in Figure 6 comprises, on a frame 35, the digging device 32 trencher wheel 36 to make a trench T in the ground S (a road for example). The digging device 32 is located at the rear of the frame 35. Usually, the trencher wheel 36 is provided at its periphery with cutting members. In the illustrated example, the wheel is intended to make narrow trenches and shallow, especially for laying cables (optical, electrical, telephone, ...).

In the exemplary embodiment shown, the suction and collection device 33 comprises, an apparatus for generating a vacuum, such as a turbine, and a casing 37 partially enveloping the trencher wheel 36. In this embodiment, the turbine is connected to the internal space between the casing 37 and the trencher wheel 36 via a flexible pipe 8. The latter is connected, on one side, to a suction intake formed in the housing 37, and, on the other side, to the device collection 7 mounted on the motorized vehicle 1.

The motorized vehicle 1 uses the aggregates produced during digging of the trench by the system 31 and recovered via the device 7 for collecting aggregates, as illustrated by arrows J1 and J2, to manufacture mortar. The mortar produced at the outlet of the mixing device 10 is preferably used for resealing at least part of the trench T dug by said system 31.

In the embodiment, shown in Figure 6, the aggregate collection device 7 is part of said suction and collection device 33.

The motorized assembly 30 thus allows the use of materials (rubble) excavated on site, for the immediate filling trench T by the product mortar, which generates an optimization of logistics and product costs.

The system 31 also comprises a coil 38 of cable 39 (optical fiber, ...) or HDPE pipe, arranged at the front of the driver's cabin of said system 31.

The operation of the motorized assembly 30, as described above, is as follows.

During the execution of the trench, the system 31 may be driven by a hydrostatic transmission also supplying the different servitudes (jacks, motors, etc.) and making it possible to easily adapt its advance to the completion of the trench.

Preferably, the trench T is made with the trencher wheel 36 of the digging device 32 arranged in the median longitudinal axis of the system 31, orthogonal to the plane of the frame 35. During the advance of the system 31, via the rotation of the trencher wheel 36, the digging device 32 digs the trench T gradually. The aggregates produced by the excavation along the cutting face are driven towards the inside of the casing 36 of which the internal space is in depression due to the operation of the suction and collection device 7. The aggregates leaving the cutting face are then sucked towards the processing line 6 of the motorized vehicle 1.

Simultaneously with the digging of the trench T, the cable or pipe 39, in particular a bundle of optical fibers, is unwound (as illustrated by arrows 11, 12 and 13) of a coil 38 arranged at the front of the system 31, using usual means. This cable or pipe 39 passes over the system 31 and is placed downstream of the trencher wheel 36, between the latter and the motorized vehicle 1, in the trench T.

As for the aggregates recovered in the processing chain 6, as illustrated by the arrows J1 and J2, they are treated in the manner specified below with reference to Figures 1 and 2, to produce mortar. This mortar is finally used at the rear of the motorized vehicle 1 to fill the trench T.

In this embodiment, the system 31 and the motorized vehicle 1 move at the same speed, one behind the other, in the direction indicated by the arrow E in FIG.

Preferably, the motorized assembly 1 comprises a means (for example a radar or any other possible means) for controlling the speed of advance of the two systems: the system 31 and the motorized vehicle 1.

In an alternative embodiment (not shown), the motorized assembly comprises, in addition to the motorized machine, a system for producing trenches in the ground, but no suction system and collection aggregates such as the system 33 cited above. In this variant embodiment, the device 7 for collecting aggregates (of the motorized vehicle 1) is of the mechanical type, for example a shovel or a telescopic machine or the like, and it is configured to mechanically collect the aggregates generated. by the trenching system.

Moreover, in another variant embodiment (not shown), the trenching system 31 can be mounted on the chassis 2 of the motorized machine 1 for recycling aggregates. In this variant embodiment, all the means (systems, devices, etc.) for producing the trenches and recycling the aggregates are mounted on one and the same motorized vehicle.

Motorized assembly 30, as described above, has many advantages, and in particular:

- economy of natural aggregates, to produce mortar;

- a significant reduction in logistics costs (the disposal of aggregates and the supply of mortar being removed); and

- a reduction in labor costs.

The motorized assembly 30 thus generates cost optimization for the construction of networks, while improving the environmental impact.

Claims

1. Motorized aggregate recycling machine, comprising a frame (2) and a power unit (3), said machine comprising, mounted on the frame (2): - an aggregate collecting device (7);

a crushing chamber (9) supplied with aggregates by said aggregate collecting device (7), and configured to crush the aggregates and to provide crushed aggregates at an outlet;

- a mixing device (10) connected to the crushing chamber (9) for receiving at least a portion of the crushed aggregates available at the outlet of the crushing chamber (9) and configured to mix these crushed aggregates received with at least one binder to produce a mortar;

- a screen (14) arranged between the crushing chamber (9) and the mixing device (10); and

- a distribution channel (12) configured to dispense the mortar produced at the outlet of the mixing device (10),

said crushing chamber (9) and said screen (14) each having a working direction (D1, D2) between their respective inlet and outlet which is transverse to a longitudinal direction (L) of the frame (2 ) of the motorized vehicle (1), and said motorized vehicle (1) having transfer paths (19, 15) on the one hand between the crushing chamber (9) and the screen (14) and on the other hand between the screen (14) and the mixing device (10), these transfer paths (19, 15) each having a distribution direction (F1, F2) which is substantially parallel to said longitudinal direction (L).

2. Machine according to claim 1,

characterized in that the screen (14) is configured to separate the aggregates available at the outlet of the crushing chamber (9) according to a predetermined size, the aggregates whose size is less than or equal to said predetermined size being transmitted to the mixing device (10) and aggregates whose size is greater than said predetermined size being returned to the crushing chamber (9).

3. Machine according to one of claims 1 and 2,

characterized in that said aggregate collecting device (7) comprises a suction device (16).

4. Machine according to one of claims 1 and 2,

characterized in that said aggregate collecting device comprises a treadmill.

5. Machine according to any one of the preceding claims, characterized in that the crushing chamber (9) is configured to operate in depression.

6. Machine according to any one of the preceding claims, characterized in that it comprises a weighing unit for weighing the crushed aggregates entering the mixing device (10).

7. Motorized assembly for making trenches,

characterized in that it comprises:

a system (31) for producing trenches in the ground, comprising at least one trench digging device (32); and

- A motorized vehicle (1) for recycling aggregates according to any one of claims 1 to 6, configured to use at least a portion of the aggregates produced during digging of the trench by said system (31) for making trenches.

8. An assembly according to claim 7,

characterized in that said trenching system (31) comprises an autonomous auxiliary power unit (34) and is connected to said motorized aggregate recycling machine (1).

9. An assembly according to claim 8,

characterized in that it comprises means for controlling the speed of advance of the system (31) for producing trenches and the motorized machine (1) for recycling aggregates.

10. The assembly of claim 9,

characterized in that said trenching system is mounted on the chassis of the motorized aggregate recycling machine.

1 1. An assembly according to any one of claims 7 to 10, characterized in that the trenching system (31) comprises a suction and collection system (33) and that said aggregate collecting device (7) ) is part of said suction and collection system (33) of the trenching system (31).

12. An assembly according to any one of claims 7 to 10, characterized in that said aggregate collecting device (7) comprises a mechanical loading means.